How to fix blushing in polyurethane?

[Chris Atzinger]

Hi,

I have a set of tree stump slabs that I am trying to finish, and I ended up with blushing in the polyurethane. You can see the dull patches near the center. Is there anyway to fix this without resanding?

I this pic shows about 6 coats of minwax wipe on poly.

Thanks!
Chris
https://lh3.googleusercontent.com/kJzLIvloIBxFH5EwDPxdU8F0D5dnEXQBxmoWOSRP1EctQxoR30 G783e3C27mgogKtzNvKXUDLxK7S5_Yek0SqW0FC7kTLu5o56yk _OYq-LIGtv5-kNbhRvlTbGUTygy9TKN1g983IsziD2bWPB1qO-kPgxVI0V6JgP6fuiOjejF3wFbws5o6bz_iBTCK0j60_cSp1wl0 jpIearHqd0CVpGhKzIGYtGArPkonsfHRyvLBB97y-w3onTreHao7CvsAvGdYlz57IkbktOhOn42LVBRLSoXdLwfTTGU CBMcctU8o4cNRfhqZeOmtkgmPhT-tvOxGVJggzfCxueHqmdkzjMco4lnc5Rp8zBWq92tpXi-0AR_DdzVLDIGOhTqdc5DaTbEZx4Yh3YnpD6xtn3oVYcfZJEkjp G2uE37TRQPwAQe91XH6_zQYKtMwIP4onMLjs32u8aLo3T_QbrG 7ORGFzViNLS1hTXYMu9DB5Hg5pcOKKs_Pmo-awVEXkhXJ3zdQ1_HqNTXct46eAazrCwiI9ONtv2a30iCk2ahDk QqotIrUYlp522VDlUZujkqXa-SdwW-XqH84Ofv3jQtRVOyR2FaRbzO-cM5Xu5twmvjoFKQ=w690-h920-no

[John TenEyck]

I don't see a picture. Were the slabs really dry? I'll bet not. If that's the case, the blushing isn't going to be resolved until they are dry to less than maybe 12% moisture

John

[Rob Young]

Also no pics.

Fix the blush in poly, probably not without sanding back and letting the slabs dry fully.

If it was lacquer or shellac, easy fix.

[Wayne Lomman]

Yes it's caused by humidity, either in the timber or else very high air humidity. If it's the timber, sand it off and let it dry properly or else use a non film finish. If it was bad weather, sand it back and do it when the humidity is around 60%. Cheers